.flex {
  display: flex;
  align-items: center;
}
.flex_center {
  justify-content: center;
}
.flex_between {
  justify-content: space-between;
}
.flex_end{
  justify-content: flex-end;
}
.flex_column{
  flex-direction: column;
}
.text_overflow {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text_overflow_2 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 42rpx;
}